Clamp for molders  flasks



(No Model.) 7

D. FRAWLEY'.

OLA-MP FOR MOLDERS FLASKS.

No. 359,251. Patented Mar. 15, 1887.

|NVENTOP\.

WITNESSES i/d iw,

} UNITED STATES PATENT OFFICE.

DAVID FBAWLEY, OF FAIRHAVEN, MASSACHUSETTS.

CLAMP FOR MOLDERS FLASKS.

SPECIFICATION forming part of Letters Patent No. 359,251, dated March 15, 1887.

Application filed June 16, 1886.

To aZZ whom it may concern:

Be it known that 1, DAVID FRAWLEY, of Fairhaven, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvementsin Clamps for Molders Flasks, of which the following is a full, clear, and exact description.

This invention relates to a clamp for binding and securely holding together the separate parts of a molders flask, and this improved clamp is composed of a bar having a hook or shoulder at one end and at the other end provided with a rotatory eccentric wheel adapted to be rotated and fastened against rotation, and all so that with the clamp applied to the flask the separate parts of the flask may be tightly bound together, and as so bound held firmly and securely, substantially as hereinafter described.

In the drawings forminga part of this specification, Figure 1 is a perspective view of a molders flask with the improved clamp of this invention applied. Fig. 2 is a cross section of Fig. 1, showing one eccentric in elevation.

In the drawings, A is a molders flask in two sections, as ordinarily.

B is a bar having a hook or shoulder, G, at one end and at the other end a rotatory eccentric wheel or disk, D,which turns on an arbor, E, of the bar. This arbor extends in the same direction as the shoulder or book C of the bar. The eccentric disk D has a series of radial holes, a, in its periphery for the insertion of a handlebar, E, to turn it, and its arbor at its outer end is provided with ascrew-nut, F, with awasher, G, interposed between it and the eccentric. Turning up this screw-nut fastens the eccentric disk against movement, and loosening said screw'nut leaves the eccentric free to turn.

The parts of the flask having been placed upon each other, as well known, the shoulder or hook O of the bar B is first placed under the edge of the lower section of the flask, and

Serial No. 205,357. (No model.)

then the end of the bar having the rotatory eccentric D is placed over the, upper edge of the upper section and the eccentric turned in a direction to bring a pressure upon the two sections of the flask, and thereby to bind them between it and the shoulder or hook G of the bar, when, turning up the screw-nut, the eccentric is fastened against movement and the parts of the flask made secure against separa tion.

In the turning of the rotatory eccentric the handle-bar H is used, it being for such purpose first inserted in a hole or holes, a, of the eccentric, and when the eccentric has been brought to its proper position this handle-bar, preferably, should be removed.

A clamp of the construction described is ap plied, as shown, to the opposite sides of the flask.

The advantages of the use of the present improved clamp over the ordinary and wellknown mode of clamping a flask are so obvious to all conversant with the same as to require no mention herein.

The clamp may be made of cast or wrought iron, or other suitable metal or material; but cast-iron is suitable.

Having thus described my invention, I claim In a molders flask-clamp of otherwise ordinary or suitable construction, a rotatory eccentric, D, and its screw-threaded arbor E, in combination with a screw-nut, F, screwing on said arbor and seating against said eccentric, substantially as described, for the purpose specified.

In testimony whereof Ihave hereunto set my hand in the presence of two subscribing witnesses.

DAVID FRAVVLEY.

Witnesses:

' J OB G. TRIPP,

HENRY H. ALLEN. 

